ISO 4869-1:2018
Current
The latest, up-to-date edition.
Acoustics — Hearing protectors — Part 1: Subjective method for the measurement of sound attenuation
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English, French
04-10-2018
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This document specifies a subjective method for measuring sound attenuation of hearing protectors at the threshold of hearing. The method is a laboratory method designed to yield reproducible values under controlled measurement conditions. The values reflect the attenuating characteristics of the hearing protector only to the extent that users wear the device in the same manner as did the test subjects.
For a more representative indication of field performance the methods of ISO/TS 4869‑5 can be used.
This test method yields data which are collected at low sound pressure levels (close to the threshold of hearing) but which are also representative of the attenuation values of hearing protectors at higher sound pressure levels. An exception occurs in the case of amplitude-sensitive hearing protectors for sound pressure levels above the point at which their level-dependent characteristics become effective. At those sound pressure levels the method specified in this document is inapplicable, as it will usually underestimate sound attenuation for these devices.
NOTE Due to masking from physiological noise in the occluded ear tests, sound attenuations below 500 Hz can be overestimated by a few decibels.
| Committee |
ISO/TC 43/SC 1
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| DS / EN ISO 4869-1: 2018 | Identical |
| DIN EN ISO 4869-1:2019-10 | Identical |
| PN-EN ISO 4869-1:2018-12 | Identical |
| NS-EN ISO 4869-1:2018 | Identical |
| EN 24869-1:1992 | Identical |
| SN EN ISO 4869-1:2019 | Identical |
| BS EN ISO 4869-1:2018 | Identical |
| NF EN ISO 4869-1:2018 | Identical |
| ÖNORM EN ISO 4869-1: 2019 05 01 | Identical |
| SS-EN ISO 4869-1:2018 | Identical |
| UNI EN ISO 4869-1:2019 | Identical |
| I.S. EN ISO 4869-1:2018 | Identical |
| NEN-EN-ISO 4869-1:2018 en | Identical |
| UNE-EN ISO 4869-1:2020 | Identical |
| CEI EN IEC 62819:2023 | Live working - Eye, face and head protectors against the effects of electric arc - Performance requirements and test methods |
| AS/NZS ISO 8253.1:2019 | Acoustics - Audiometric test methods Pure-tone air and bone conduction audiometry |
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